Django as S3 proxy

Question

I extended a ModelAdmin with a custom field \"Download file\", which is a link to a URL in my Django project, like:

http://www.myproject.com/downloads/1
         


        

Answer 1

Yes, you can use Django as a proxy to stream your S3 files to the user.

1. Generate a standard S3 url for your file.
2. Use the requests library to fetch your file in streaming mode.
3. Use Django to serve up the raw stream to the user.

import requests, boto3
from django.views.generic import View
from django.http.response import HttpResponse

class MediaDownloadView(View):

    def get(self, request, *args, **kwargs):
        s3 = boto3.resource(
            service_name='s3', aws_access_key_id='XXX_AWS_ACCESS_KEY_ID',
            aws_secret_access_key='XXX_AWS_ACCESS_KEY',
        )
        url = s3.meta.client.generate_presigned_url(
            ClientMethod="get_object", ExpiresIn=3600,
            Params={
                "Bucket": 'XXX_BUCKET_NAME',
                "Key": 'XXX_OBJECT_KEY',
            },
        )
        r = requests.get(url=url, stream=True)
        r.raise_for_status()
        response = HttpResponse(r.raw, content_type='audio/mp3')
        response['Content-Disposition'] = 'inline; filename=music.mp3'
        return response